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F. frenguelli 115 x 23 μm Karakemi marsh Yasaka Nagano, 2005	F. frenguelli 100-112 x 22-24 μm Hakama marsh Madarao highland Niigata, 2005
F. frenguelli 111 x 20.5 μm Shimizu-daira Nasu Tochigi, 2005	F. frenguelli 90 x 19 μm Tanohara Natural p. Ontake highland Nagano, 2005	F. frenguelli 74, 83, 90 x μm Numappara marsh Kuroiso Tochigi, 2003
F. frenguelli 80 x 19 μm Shimo-no-koike Shiga highland Nagano, 2004	F. frenguelli 48 x 13 μm Hakama marsh Madarao highland Niigata, 2005	F. frenguelli 53,77 x μm Kodanuki marsh Fujinomiya Shizuoka, 2005	F. frenguelli 80 x 18 μm 70 x 16 μm Yumi-ike Shirane mountain Gunma, 2005
F. frenguelli 65 x 15 μm Yoshigadaira m. Shirane mountain Gunma, 2005	F. frenguelli 94 x 20 μm Ukishima marsh Tsugaike highland Nagano, 2005	F. frenguelli 80 x 17.5 μm Tanohara Natural p. Ontake highland Nagano, 2005	F. frenguelli 65 x 15 μm Mashiko Tochigi, 1999
F. frenguelli ? 63 x 13 μm Ushidome-ike Norikura highland Nagano, 2005	F. frenguelli or F. rhomboides ? 56 x 13 μm Shibu-ike Shiga highland Nagano, 2005	F. frenguelli or F. rhomboides ? 78,95 μm Iroha-numa Zao mountain Yamagata, 2005	F. frenguelli or F. rhomboides ? 62 x 14 μm Kisuge konuma Shimogo Fukushima, 2005
F. frenguelli ? 100 x 20 μm Shijuhachi-ike Shiga highland Nagano, 2006
F. rhomboides 136 x 25 μm Komado marsh Showa and Tajima Fukushima 2004	F. rhomboides 123 x 24 μm Tashirodaira m. Hakkoda mountain Aomori 2005	F. rhomboides 119 x 22 μm Sukawa highland Kurikoma mountain Akita 2005	F. rhomboides 92 x 20 μm Shimizu-daira Nasu Tochigi 2005
F. rhomboides 58, 70 x μm Omine-numa Tsukiyono Gunma, 2003	F. rhomboides 80 x 16 μm Koigakubo marsh Tessei-cho Okayama, 2004	F. rhomboides 96 x 16 μm Tanohara marsh Shiga highland Nagano, 2005	F. rhomboides ? 80 x 17 μm Oyachi marsh Iizuna Highland Nagano, 2005
F. rhomboides 100 x 22 μm Imou bog Toyohashi Aichi, 2004	F. rhomboides 74 x 16.5 μm Sukawa highland Kurikoma mountain Akita, 2005	F. rhomboides ?? 71 x 15 μm Senuki Nasu Tochigi, 2004	F. rhomboides 62 x 14 μm Kannon-numa Shimogo Fukushima, 2005
F. rhomboides 66 x 15 μm Shijuhachi-ike Shiga highland Nagano, 2006
F. vulgaris 75 x μm Nan-ko Shirakawa Fukushima, 2003	F. vulgaris μm Daidarabotchi-ike Iizuna-kogen Nagano, 2003	F. vulgaris 67 x 14 μm Numa-no-hara m. Madarao highland Niigata, 2005	F. vulgaris 86 x 18 μm Tashirodaira m. Hakkoda mountain Aomori, 2005
Frustulia sp. 55 x 14 μm Tanohara marsh Shiga highland Nagano, 2004	Frustulia sp. ? 143 x 25 μm Komado marsh Showa and Tajima Fukushima 2004

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